diff options
| -rw-r--r-- | target/i386/kvm.c | 81 |
1 files changed, 42 insertions, 39 deletions
diff --git a/target/i386/kvm.c b/target/i386/kvm.c index 27fd050..0c48dfd 100644 --- a/target/i386/kvm.c +++ b/target/i386/kvm.c @@ -469,31 +469,34 @@ int kvm_arch_on_sigbus_vcpu(CPUState *c, int code, void *addr) ram_addr_t ram_addr; hwaddr paddr; - if ((env->mcg_cap & MCG_SER_P) && addr - && (code == BUS_MCEERR_AR || code == BUS_MCEERR_AO)) { + if (code != BUS_MCEERR_AR && code != BUS_MCEERR_AO) { + return 1; + } + + /* Because the MCE happened while running the VCPU, KVM could have + * injected action required MCEs too. Action optional MCEs should + * be delivered to the main thread, which qemu_init_sigbus identifies + * as the "early kill" thread, but if we get one for whatever reason + * we just handle it just like the main thread would. + */ + if ((env->mcg_cap & MCG_SER_P) && addr) { ram_addr = qemu_ram_addr_from_host(addr); - if (ram_addr == RAM_ADDR_INVALID || - !kvm_physical_memory_addr_from_host(c->kvm_state, addr, &paddr)) { - fprintf(stderr, "Hardware memory error for memory used by " - "QEMU itself instead of guest system!\n"); - /* Hope we are lucky for AO MCE */ - if (code == BUS_MCEERR_AO) { - return 0; - } else { - hardware_memory_error(); - } - } - kvm_hwpoison_page_add(ram_addr); - kvm_mce_inject(cpu, paddr, code); - } else { - if (code == BUS_MCEERR_AO) { + if (ram_addr != RAM_ADDR_INVALID && + kvm_physical_memory_addr_from_host(c->kvm_state, addr, &paddr)) { + kvm_hwpoison_page_add(ram_addr); + kvm_mce_inject(cpu, paddr, code); return 0; - } else if (code == BUS_MCEERR_AR) { - hardware_memory_error(); - } else { - return 1; } + + fprintf(stderr, "Hardware memory error for memory used by " + "QEMU itself instead of guest system!\n"); + } + + if (code == BUS_MCEERR_AR) { + hardware_memory_error(); } + + /* Hope we are lucky for AO MCE */ return 0; } @@ -501,29 +504,29 @@ int kvm_arch_on_sigbus(int code, void *addr) { X86CPU *cpu = X86_CPU(first_cpu); - if ((cpu->env.mcg_cap & MCG_SER_P) && addr && code == BUS_MCEERR_AO) { + if (code != BUS_MCEERR_AR && code != BUS_MCEERR_AO) { + return 1; + } + + if (code == BUS_MCEERR_AR) { + hardware_memory_error(); + } + + /* Hope we are lucky for AO MCE */ + if ((cpu->env.mcg_cap & MCG_SER_P) && addr) { ram_addr_t ram_addr; hwaddr paddr; - /* Hope we are lucky for AO MCE */ ram_addr = qemu_ram_addr_from_host(addr); - if (ram_addr == RAM_ADDR_INVALID || - !kvm_physical_memory_addr_from_host(first_cpu->kvm_state, - addr, &paddr)) { - fprintf(stderr, "Hardware memory error for memory used by " - "QEMU itself instead of guest system!: %p\n", addr); - return 0; - } - kvm_hwpoison_page_add(ram_addr); - kvm_mce_inject(X86_CPU(first_cpu), paddr, code); - } else { - if (code == BUS_MCEERR_AO) { - return 0; - } else if (code == BUS_MCEERR_AR) { - hardware_memory_error(); - } else { - return 1; + if (ram_addr != RAM_ADDR_INVALID && + kvm_physical_memory_addr_from_host(first_cpu->kvm_state, + addr, &paddr)) { + kvm_hwpoison_page_add(ram_addr); + kvm_mce_inject(X86_CPU(first_cpu), paddr, code); } + + fprintf(stderr, "Hardware memory error for memory used by " + "QEMU itself instead of guest system!: %p\n", addr); } return 0; } |